Fourdrinier paper making machine



` July 14, 1936. BL A MANN 2,047,422

FOURDRINIER PAPER MAKING MACHINE Filed March 22, 1954 4 Shee'lZS-Sheerl l ATTORNEY July 14, 1936. B. A. MALKIN FOURDRINIER PAPER MAKING MACHINE Filed March 22, 1954 4 Sheets-Sheet 2 ATTORNEY INVENTOR July 14, 1936 B. A. MALKIN FOURDRINIER PAPER MAKING MACHINE 4 sheets-sheet s Filed'Maroh 22, 1954 INVENTOR- .ATTORNEY- B. A. MALKIN 2,047,422

4 Sheets-Sheet 4 ATTOR NEW IWENTDR BERNARDMALKI N July 14, 1936.'

FOURDRINIER PAPER MAK ING MACHINE Filed Maro'h 22, y1954 Patented `uly 14, 1936 UNITED STATES PATENT OFFICE FOURDRINIER PAPER MAKING MACHINE Application March 22, 1934, Serial No. 716,866

13 Claims.

'I'his invention relates to Fourdrinier paper making machines of the type in which the table roll section is shifted laterally to facilitate replacement of the forming wire and has, as its '5- principal object, the provision of simple and practical means for supporting the table roll section so that the desired lateral displacement may be accomplished in a more convenient and advantageous manner as compared with present practice. i

Another object is the provision of a generally improved construction in which supporting beams or rail members are arranged totravel with the table roll section and to support one side thereof 1'5' on the cantilever principle duringmovement of the table roll to and from operative position.

Other objects, advantages and characteristic features of the invention will be more readily understood from the following detailed descrip- 2C tion taken in connection with the accompanying drawings.

Fig. 1 is an end view of a Fourdrinier table roll section and mounting means designed in accordance with this invention. In this View the table roll section is shown in its normal or operative position.

Fig. 2 is a View similar to Fig. 1 but showing the table roll section in a position intermediate its operative and fully displaced positions.

Fig. 3 is a view similar to Fig. 1 but showing the table roll section in its fully displaced position.

Figs. 4, 5 and 6 are views corresponding respectively with Figs. 1, 2 and 3 but showing certain modifications.

Fig. 7 is a side elevation of the table roll section as it appears in its fully displaced position when looking toward the side adjacent the pit.

Figs. 8, 9 and l0 are views corresponding respectively to Figs. 1, 2 and 3 but showing still further modifications.

Fig. 11 is a view, similar to Fig. 7, but specific to the modification shown in Figs. 8, 9 and 10.

A simple embodiment of the invention applied to the table roll sectionof a Fourdrinier machine is shown in Figs. 1, 2 and 3 in which, for the sake of clearness, other portions of the paper making machine are omitted. As here shown the table roll section 5 includes a series of trans- 50 verse beam or rail members 6, only one of which appears in the drawings. Each beam or rail member projects beyond the sides of the main portion of the table roll sectionand is provided witha laterally projecting bottom nange 1. As shown in Fig. 1 the table roll section is normally centered over the usual pit 8 with the flanged bottom portions of the beams or rail members 6 resting on two series of supporting rollers indicated at 9 and I0. lThese rollers are carried by two series of roller stands II and I2 located in 5 the aisles I3 and I4 near opposite sides of the pit.`

Additional roller stands I5 and I5a are arranged in the aisle I3 so that the rollers I6 thereof cooperate with the rollers 9 to provide supports on which the beam or rail members 6 10 rest when the table roll section is in the laterally displaced position shown in Fig. 3. Further roller stands I'I are also located in the aisle I3 between the previously mentioned stands II and I5a. These roller stands II project above the remain- 15 ing stands and carry rollers I8 positioned to engage the upper surfaces of the beam or rail flanges 1", as indicated in Figs. 2 and 3.

When the forming wire (not shown) is to be replaced the table roll section 5 is shifted to the 20 left from the position shown in Fig. 1 to the position shown in Fig. 3. During the initial part of this movement the rails or beams 6 travel on and are supported solely by the rollers of the stands II and I2, located at opposite sides of the pit. As 25 the table roll section continues its movement to the left the leading ends of the beam or rail flanges 'I engage beneath the rollers of the stands I'I just before the trailing ends of the beam or rail members 6 leave the supporting rollers of 30 the stands I2. As the beams or rails 6 pass entirely out of engagement with the rolls of the stands I 2 the beams or rails 6, in conjunction with the rollers of the stands II and I'I, support thetable on the cantilever principle until the 35 table reaches a balanced position on the supporting rollers located in the aisle I3.

During return movement of the table the beam or rail flanges I do not pass out of engagement with the rollers of the stands I'I until shortly 40 after the leading ends of the rails or beams are advanced to a position resting on the rolls IIJ of the stand II. It will thus be seen that the beams or rails 6 cooperate with the rollers of the stands II and I'I to maintain the table in a 45 horizontal position during the unbalanced part of its travel to or from an operative position.

The table roll section 5 may be simply pushed to and from its operative position or the rolls 9 may be power driven and provided with pinion teeth meshing with racks formed on or fixed to the undersides of the engaging beams or rails 6.

In the modification shown in Figures 4 to 7 inclusive the same result is accomplished by the use of auxiliary beams or rail members 20 coop- 55 erating with the main beams or rails 6 of the table roll section. These auxiliary members 20 are lmounted to slide on rollers 2I and 22 (Fig. 4) carried by roller stands 23 and 24 located in the aisle I4. Additional roller stands 25, located between the stands 23 and 24, carry rollers 26 which bear on the upper surfaces of the members 20. The ntable roll section 5 and the auxiliary beam or rail members 28 are relatively arranged as shown in Fig. 4 when the table roll section occupies its normal operative position over the pit 8. As here shown the main beam or rail members 6 rest on rollers 21 and 28, the rollers 21 being carried by the auxiliary beams 20 and the rollers 28 being carried by roller stands 29 located in the aisle I3 close to the adjacent side of the pit. Additional roller stands 38, arranged in the aisle I3,

carry rollers 3I Which cooperate with the rollers 28 to support the table roll section 5 When the latter is in its fully displaced position shown in Fig. 6.

When the table roll section is positioned as shown in Fig. 4 the auxiliary beams 20 are detachably fastened to the main beams 6 to travel therewith when the table roll section is shifted to the left from the position shown in Fig. 4 to that shown in Fig. 5. In the present instance each beam 6 (of which there are 2 as shown in Fig. 7) is provided with a latch in the form of a bell crank lever 32 fixed to rotate with a rock shaft 33 and having one arm 34 provided with a hooked terminal 35 adapted to engage behind a projection 35 on the associated auxiliary beam 20. The remaining arm 31 of one of the latches 32 is connected by a rod 38 to a latch releasing lever 39 that is pivoted to the associated beam 6. A spring 48 encircles the rod 38 between suitable abutments 4I and 42 and normally tends to urge the latches 32 to the operative position shown in Fig. 4.

From the. drawings and the foregoing description it will be apparent that the auxiliary beams 28 cooperate with the associated rollers 2I and 26 to serve as cantilever supports for the trailing side of the table roll section as the latter is shifted t the position shown in Fig. 5. When the table roll section reaches this position it is balanced on the supporting rolls 28 and certain of the rolls 3I located in the aisle I3 so that the auxiliary beams 28 may be then released (by operating the levers 39 to pull the latch arms 31' back against suitable stops 31a) and Withdrawn to their original position as shown in Fig. 6, the movement of the table roll section to the left being then continued until it reaches its nal displaced position also shown in Fig. 6.

In returning the table 'roll section to its operative position it is rst shifted to the right from the position shown in Fig. 6 to that shown in Fig. 5. The auxiliary beams 28 are then shifted to the left from the position shown in Fig. 6 to that shown in Fig. so that the projections 36 thereof are engaged beneath the latch members 32. The movement of the table roll section to 'the right may then be continued since the advancing end of the table roll section is now adequately supported by the auxiliary beams as it travels back to its nal operative position shown in Fig. 4.

In order to facilitate the aforesaid movements of the table roll sections the supporting rolls 28 thereof are driven by a powerA shaft 44 through suitable enclosed gearing generally indicated at 45. While not shown in the drawings these rollers 28 may be provided with pinion teeth meshing with racks at the undersides of the main beams or rails 6.

Each of the auxiliary beams 20 carries angle plates 41 and 48. The plate 41, as shown in Fig. 4, is bolted to the standard 25 to temporarily hold the beam 2U against accidental movement when the table roll section is in use. Similarly the plate 48 is adapted to be bolted to the standard 25 to hold the beam 28 in the position shown in Fig. 5 in cases where the beams 20 are shifted to this position prior to return movement of the table roll section from the position shown in Fig. 6 to that shown in Fig. 5.

In the further modification shown in Figs. 8 to 11 inclusive an auxiliary beam 5I is slidably arranged in each of the hollow transverse beams 52 of the table roll section 5. At its inner end each beam 5I is provided with upper and lower bearing rollers 53 riding the top and bottom members'of the enclosing beam 52, the inner end of which is similarly equipped with upper and lower rollers 54 riding the top and bottom portions of the beam 5I. In this case the table roll section is normally supported over the pit 8 as shown in Fig. 8. As here indicated the outer ends of the auxiliary beams 5I rest on and are releasably secured to suitable stands 55 located on the rear baseplate while the outer ends of the main beams 52 rest on supporting rollers 56 carried by roller stands 51 located in the aisle I3. The means for fastening the outer end of each auxiliary beam 5I to its supporting stand 55 may take any form that will permit the beam to be readily released from the stand. In the present instance each beam 5I is provided With an angle plate 51a adapted to be bolted to the stand as indicated at 58 in Figs. 8 and 9.

During movement of the table roll section from the operative position shown in Fig. 8 to the fully displaced position shown in Fig. the auxiliary beams 5I cooperate with the main beams 6 and the stands 55 to serve as cantilever supports for the trailing side of the table roll section until the latter reaches a balanced position on the supporting rollers 56 and 60 located in the aisle I3 as shown in Fig. 9, the rollers 6I] together with certain additional rollers 6I being respectively carried by suitable stands 62 and 63. After the table roll section reaches its balanced position on the rollers 56 and 6U the auxiliary beams 5I may be released from the stands 55 and shoved into the beams 52 and the movement of the table roll section to the left continued until it rests on the three sets of rollers 56, 60 and 6I as shown in Fig. 9.

In returning the table roll section to its operative position it is rst shifted to the right from the position shown in Fig. 10 to a balanced position similar to that shown in Fig. 9. The auxiliary beams 5I are then Withdrawn from the beams 52 and fastened to the stands 55 to support the advancing side of the table roll section during the remainder of its travel to the operative position shown in Fig. 8.

Having thus described my invention, what I claim isz- 1. A Fourdrinier paper machine equipped with a laterally movable table structure, rollers mounted independently of the table and arranged to support the table in either an operative or a laterally displaced position and further rollers beneath which portions of the movable table structure are engaged to prevent tilting of the table during its lateral movement to and from an operative position.

2. A Fourdrinier paper machine equipped with a laterally movable table including transverse rail members, rollers on which said rail members travel during lateral movement of the table to or from an operative position and further rollers beneath which the rail members are engaged to prevent tilting of the table during its lateral movement, all of said rollers being mounted independently of the table and rail members.

3. A Fourdrinier paper machine equipped with a laterally movable table, rollers mounted independently of the table and arranged to support the table in either an operative or a laterally displaced position, means for driving certain of said rollers to propel the table to or from either of said positions and further rollers beneath which portions of the table are engaged to prevent tilting of the table during its lateral movement to and from an operative position.

4. A Fourdrinier machine as claimed in claim 2, in which each rail member comprises two separately connected sections, one section being arranged to travel on supporting rollers located in the aisle at one side of the machine and the other section being arranged to travel between upper and lower rollers located at the opposite side of the machine.

5. A Fourdrinier paper machine equipped with a laterally movable table, extension members adapted to be detachably secured to said table to form lateral extensions movable therewith, independently mounted rollers arranged to support the undersides of the table and extension members during lateral movement thereof, and further rollers arranged to bear on the upper surfaces of said extension members.

6. A Fourdrinier machine as claimed in claim 5 including means for driving certain of said rollers to furnish power for effecting lateral movement of said table and extension members.

7. A Fourdrinier machine including a laterally movable table equipped with laterally projecting extensions movable therewith, rollers mounted independently of the table and arranged to support the table in either an operative or an inoperative position, means for driving certain of said rollers to propel the table to or from either of said positions, said driven rollers being in direct, uninterrupted, propelling engagement with the table in all positions of the latter, and means arranged to bear on the upper surfaces of said extensions to prevent tilting of the table when it reaches an unbalanced position during its lateral movement in either direction.

8. A Fourdrinier paper machine equipped with a laterally movable table including xed transverse rail members, extension rails adapted to be detachably connected to said iixed rail members to form continuations thereof at one side of the table, independently mounted rollers arranged to support the underside of said fixed transverse rail members during lateral movement thereof, similar independently mounted rollers arranged to support the undersides of said extension rails during lateral movement thereof, and additional rollers bearing on the upper surfaces of said extension rails to prevent tilting thereof when the table reaches an unbalanced position during its lateral movement in either direction.

9. A Fourdrinier paper machine equipped with a laterally movable table including transverse rail members permanently iixed to move therewith, auxiliary rails slidably mounted at one side of said machine between upper and lower supporting and guiding members bearing respectively against the upper and lower surfaces of said auxiliary rails, said auxiliary rails being disposed to extend beneath adjacent ends of said fixed rails to support one sideof the table when the latter is in its operative position.

10. A Fourdrinier paper machine equipped with a laterally movable table including transverse rail members movable therewith, independently mounted supporting elements on which said rail members travel during lateral movement of the table to or from an operative position and independently slidable auxiliary rail members cooperable with the rst mentioned rail members and with further independently mounted rail supporting elements to support one side of the table until the latter reaches a balanced position during its lateral movement in either direction.

11. A Fourdrinier paper machine equipped with a laterally movable table including transversely extending rails of telescopic construction, each rail comprising a main section xed to travel with the table and an auxiliary section slidably associated with the main section, independently mounted supports at one side of the table to which the outer ends of the auxiliary rail sections are secured and other supports at the other side of 'the table on which the fixed rail sections travel during lateral movement of the table to or from an operative position.

l2. A Fourdrinier paper making machine equipped with a laterally movable table, including transversely extending rails of telescopic con.- struction, each rail comprising a hollow section fixed to travel with the table and an auxiliary section slidablymounted within the hollow section, supports at one side of the table to which the outer ends of the auxiliary rail sections are secured and supports at the opposite side of the table on which the hollow rail sections travel during lateral movement of the table to or from an operative position.

13. A paper making machine as claimed in claim 12 including upper and lower rollers on the inner end of the auxiliary section bearing respectively against upper and lower portions of the hollow section and upper and lower rollers carried by the hollow section and bearing re spectively on the upper and lower surfaces of the inner section.

BERNARD A. MALKIN. 

